Fix: Copilot Chat is logged out

[fred-sch]

Closes #21255

Release Notes:

• Fixed Copilot Chat OAuth Token parsing

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[fred-sch]

@cla-bot check

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[fred-sch]

I summarized the details of this fix in #21255 (comment).

[bennetbo]

Hey, thanks for investigating! This PR breaks copilot chat for me, because (for whatever reason) the oauth token is still stored in hosts.json on my machine.
However, looking at other repositories on GitHub, it seems like that it's actually pretty common to check for both hosts.json and apps.json (search query).
I changed the implementation to handle both cases, can you check if this still works for you?

[fred-sch]

Thanks for your feedback. Your fix is still working fine for me!

I was expecting that users would need to sign-out and sign-in again into github copilot (because they have the hosts.json file but not the apps.json), but I totally agree that checking both files is the better solution.

[bennetbo]

Thanks for verifying! After logging out and in again, I can indeed see the hosts.json file appearing, not sure why I did not make that connection.
Anyways, thanks for fixing this!

[erenergul]

Its not working in my case. Still can not login for chat.

[bennetbo]

Its not working in my case. Still can not login for chat.

The fix has not been released (although it will be part of today's preview release). Are you running into this building from main?